If you're wanting to find a dog up for adoption in Missouri right now, what you're more than likely to find will be a breed that's complicated based on new numbers.
There are a lot of exotic animals including kangaroos, tigers, and bears that are legal to own in Wisconsin. You'll want to check your local city ordinances before you buy a tiger.
How do you feel about Illinois state and local governments limiting how many pets you can have? Sound outrageous? There are already towns and cities in Illinois that already do.